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S~CSB~ATER I~a~OFF DET~NTICI~ BASIN <br /> C~UPPERST. BARY'SCREEK <br /> <br /> ~, ~I~ <br /> ~I~ OF S~PE OF S~S <br /> <br /> C~P DRESSER & MCKEE <br />DESI~ P~E <br /> <br />~K i ~p site geolo~ ~ revi~ of previ~s rapping, interpretation of <br /> recent air photos, ~d site reco~aiss~ce, es~cially along <br /> previ~sly mp~d nor~ern ~nt area. ~otec~ical <br /> exploration using ~ckhoe pits at ~ ~nts, in stre~ ~d <br /> in ~tential ~rr~ areas, ~d using explorato~ ~rings along <br /> pro~s~ d~ ~is. S~les will ~ t~en fr~ pits ~d ~rings <br /> for l~rato~ testing. <br /> <br />~K 2 ~otec~ical interpretation ~d ~alysis. ~ratory testing <br /> ~ght include ~confin~ co~ression streng~, l~rato~ <br /> co~ction, d~ density, plasticity index, sieve ~lysis, ~d <br /> h~r~ter as dee~ necessa~ ~ ~e Project ~gineer.. We will <br /> assess si~e seis~.city ~d ~i~ credible gro~ accelerations. <br /> <br />~K 3 Pre~ration of desi~ ~r~ters for e~nt desi~, side <br /> slo~s, ke~y, dep~ of ~t at ~nts, clay core or liner <br /> re~ire~nts, see~ge ~lysis, general fill r~ireMnts; o~er <br /> as~cts of geotec~ical desi~. <br /> <br />~K 4 Pre~re written geotec~ical re~rt with raps, l~s, test results, <br /> flares. <br /> <br />~K 5 Pre~re preli~ last of e~nt, 1~ fl~ outlet pi~ ~d <br /> e~rgenq spill~y. Cal~late elevation-storage relationship <br /> using ~e 1984 to~graphic mp for Kottinger ~ch pre~r~ ~ <br /> ~cKay & So~s. <br /> <br />~K 6 Perform h~rologic ~alysis to dete~ne ~e retired vol~ of <br /> ~e detention ~sin ~ 1~ fl~ outlet pi~ ne~ to achieve '~e <br /> desired reaction in ~ak fl~ in St. ~'s Creek. Cal~late ~e <br /> ~i~ desi~ fl~ rate ~d size for emergenq spill~y. <br /> <br />~K 7 Using ~e Task 5 preli~ desi~ ~d ~e Task 6 results, <br /> pre~re a fill desi~ of ~e e~nt, e~rgen~ spill~y, ~d <br /> 1~ fl~ outlet pi~. Pre~re plus, s~cifications, ~d <br /> constmction cost estimte. <br /> <br /> EXHIBIT A <br /> <br /> <br />